The iPhone SLR Mount by Photojojo turns an iPhone into a DLSR using real SLR lenses.
This case-adapter combo lets you mount your Canon EOS or Nikon SLR lenses to your iPhone 4 giving your phone powerful depth of field and manual focus.
Telephoto, wide angle, macro, or your fixed fifty lenses all attach to this mount giving you a full range of lenses at your iPhone lovin’ fingertips.